Back to School Secret Code Worksheets - Free Printable

Let's solve this fun "Back-to-School Message" puzzle step by step.

Step 1: Understand the Code

At the top of the page, there is a symbol-to-letter key. Each symbol represents a letter of the alphabet:

```
A = Backpack
B = +
C = ←
D = O (circle)
E = ○ (empty circle)
F = Diamond
G = Apple
H = →
I = School Bus
J = Swirl
K = *
L = ● (filled circle)
M = Heart
N = Paper
O = Square
P = X
Q = 😊 (smiley face)
R = Pencil
S = Star
T = Triangle
U = ↑
V = ◎ (circle with dot)
W = -
X = ~ (wavy line)
Y = □ (square)
Z = Flower
```

We'll use this key to decode the message below.

---

Step 2: Decode the Message

Now let’s go through each row and translate the symbols into letters.

#### First Line:
```
- ○ ● ← □ ♥ ○ + 🎒 ← *
```

Using the key:
- `-` = W
- `○` = E
- `●` = L
- `←` = C
- `□` = O
- `♥` = M
- `○` = E
- `+` = B
- `🎒` = A
- `←` = C
- `*` = K

So we get: W E L C O M E B A C K!

Wait — that doesn’t quite make sense. Let's check again.

Actually, the first line has an exclamation mark at the end, so it's likely:

WELCOME BACK!

But let's double-check the sequence:

- `-` = W
- `○` = E
- `●` = L
- `←` = C
- `□` = O
- `♥` = M
- `○` = E
- `+` = B
- `🎒` = A
- `←` = C
- `*` = K

Yes — WELCOME BACK! ✔

---

#### Second Line:
```
🚌 △ ★ 🍎 □ 🚌 📄 🍎 △ □
```

Decode:
- `🚌` = I
- `△` = T
- `★` = S
- `🍎` = G
- `□` = O
- `🚌` = I
- `📄` = N
- `🍎` = G
- `△` = T
- `□` = O

So: IT’S GOING TO BE GREAT!? Wait — that's not matching.

Wait — let's look carefully:

- `🚌` = I
- `△` = T
- `★` = S
- `🍎` = G
- `□` = O
- `🚌` = I
- `📄` = N
- `🍎` = G
- `△` = T
- `□` = O

So: IT'S GOING TO BE... — but we only have 10 symbols.

Wait — actually, it's:
IT’S GOING TO BE GREAT! — but “GREAT” isn't here.

Wait — maybe it's IT’S GOING TO BE FUN!?

No — let’s recheck the symbols.

Wait — maybe we’re missing something.

Wait — the second line is:

```
🚌 △ ★ 🍎 □ 🚌 📄 🍎 △ □
```

That’s:
- I T S G O I N G T O

So: ITS GOING TO — but “GOING” is 5 letters, and we have:

- 🍎 = G
- □ = O
- 🚌 = I
- 📄 = N
- 🍎 = G

Yes — GOING

Then: △ = T, □ = O → TO

So: IT’S GOING TO

But what about the rest?

Wait — no, the next line starts with:

```
+ ○ 🎒 🍎 🖋️ ○ 🎒 △
```

So perhaps the second line ends at “TO”, and the third line continues.

Let’s proceed.

---

#### Third Line:
```
+ ○ 🎒 🍎 🖋️ ○ 🎒 △
```

Decode:
- `+` = B
- `○` = E
- `🎒` = A
- `🍎` = G
- `🖋️` = R
- `○` = E
- `🎒` = A
- `△` = T

So: BE A GREAT — wait, “BE A GREAT”?

Wait: B E A G R E A T

That’s BEAGREAT — but should be BE A GREAT?

Wait — no: B E A G R E A T → BEAGREAT

But that doesn't make sense.

Wait — maybe it's BE A GREAT?

But we don’t have space for “A”.

Wait — the symbols are:

- `+` = B
- `○` = E
- `🎒` = A
- `🍎` = G
- `🖋️` = R
- `○` = E
- `🎒` = A
- `△` = T

So: B E A G R E A T → BEAGREAT

But that's not grammatical.

Wait — perhaps it's BE A GREAT — but where is the “A”? It’s already used.

Wait — maybe it's BE A GREAT — but the “A” is represented by backpack, which appears twice.

Wait — maybe it's BE A GREAT — but “A” is only one letter.

Wait — perhaps the intended phrase is:

IT’S GOING TO BE A GREAT YEAR!

Let’s try to fit it.

We had:

Line 1: WELCOME BACK!

Line 2: IT’S GOING TO

Line 3: BE A GREAT

Line 4: YEAR!

Let’s check the last line:

#### Fourth Line:
```
□ ○ 🎒 🖋️
```

Decode:
- `□` = O
- `○` = E
- `🎒` = A
- `🖋️` = R

So: O E A R → OEAR — doesn’t make sense.

Wait — that can’t be.

Wait — let’s list all lines clearly.

---

Let me rewrite the full message with spacing:

```
- ○ ● ← □ ♥ ○ + 🎒 ← * !

🚌 △ ★ 🍎 □ 🚌 📄 🍎 △ □

+ ○ 🎒 🍎 🖋️ ○ 🎒 △

□ ○ 🎒 🖋️ !
```

Now, let’s decode each line properly.

---

Line 1:

- `-` = W
- `○` = E
- `●` = L
- `←` = C
- `□` = O
- `♥` = M
- `○` = E
- `+` = B
- `🎒` = A
- `←` = C
- `*` = K
- `!` = !

So: WELCOME BACK! ✔

---

Line 2:

- `🚌` = I
- `△` = T
- `★` = S
- `🍎` = G
- `□` = O
- `🚌` = I
- `📄` = N
- `🍎` = G
- `△` = T
- `□` = O

So: IT’S GOING TO → But wait — “IT’S” is three letters, then “GOING” is five, then “TO” is two.

But “IT’S” is: I T S → yes.

“GOING”: G O I N G → yes.

“TO”: T O → yes.

So: IT’S GOING TO

But we need more.

---

Line 3:

- `+` = B
- `○` = E
- `🎒` = A
- `🍎` = G
- `🖋️` = R
- `○` = E
- `🎒` = A
- `△` = T

So: B E A G R E A T → BEAGREAT

Wait — that’s not right.

But if we read it as: BE A GREAT

But we don’t have a separate “A” — unless the backpack is used for both.

Wait — maybe it's BE A GREAT — but the “A” is represented by backpack, which is used twice.

But in English, we say “Be a great...”

But “a” is one letter, so we need one symbol for “A”.

We have `🎒` = A.

So: B E A G R E A T → BEAGREAT

But that’s awkward.

Wait — perhaps it’s BE A GREAT — but the word “A” is missing.

Wait — no — the symbols are:

+ (B), ○ (E), 🎒 (A), 🍎 (G), 🖋️ (R), ○ (E), 🎒 (A), △ (T)

So: B E A G R E A T → BEAGREAT

But that’s not standard.

Wait — could it be BE A GREAT?

But we don’t have a symbol for “A” — we do: backpack = A.

But we have it twice — so maybe it's BE A GREAT — but the “A” is shared.

Wait — perhaps it's BE A GREAT — but the “A” is just once.

Wait — no, the symbols are:

- + = B
- ○ = E
- 🎒 = A
- 🍎 = G
- 🖋️ = R
- ○ = E
- 🎒 = A
- △ = T

So: B E A G R E A T → BEAGREAT

But that’s not correct.

Wait — maybe it’s BE A GREAT — but the “A” is written as backpack, and it’s used for both the “A” in “BE A” and “GREAT”?

But “GREAT” starts with G, not A.

Wait — no.

Wait — perhaps the message is:

WELCOME BACK!
IT’S GOING TO BE A GREAT YEAR!

So let’s see:

After “IT’S GOING TO”, we need “BE A GREAT YEAR!”

But we have:

Line 3: + ○ 🎒 🍎 🖋️ ○ 🎒 △ → B E A G R E A T

That’s BEAGREAT

But we need “BE A GREAT” — which is 8 letters: B E A G R E A T — same letters!

So: BE A GREAT — but written as B-E-A-G-R-E-A-T — so the “A” is used twice.

But in English, “BE A GREAT” has two A’s? No — “BE A GREAT” has one A.

Wait — “GREAT” has no A.

Wait — “BE A GREAT” — letters: B, E, A, G, R, E, A, T — no, “GREAT” has G,R,E,A,T — so it does have an A.

Ah! Yes — “GREAT” has an A.

So: “BE A GREAT” — B, E, A, G, R, E, A, T — two A’s.

So yes — BE A GREAT — uses two A’s.

And we have two backpacks — so it works.

So: BE A GREAT

But “BE A GREAT” is not a complete phrase — we need “YEAR!”

So line 4 must be “YEAR!”

But line 4 is:

```
□ ○ 🎒 🖋️ !
```

- `□` = O
- `○` = E
- `🎒` = A
- `🖋️` = R
- `!` = !

So: O E A R → OEAR — not “YEAR”

Wait — “YEAR” is Y, E, A, R

But we have: O, E, A, R → OEAR

But O is square, which is O — but Y is represented by □ (square)? Wait — no.

Look back at the key:

```
Y = □ (square)
```

But in the key, we have:

- `□` = Y

Wait — let’s check the key again.

In the top row:

```
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
🎒 + ← O ○ ♦ 🍎 → 🚌 🌀 * ● ♥ 📄 □ x 😊 🖋️ ★ △ ↑ ◎ - ~ □ ✿
```

Wait — now I see a problem.

The symbol for Y is □, but earlier I thought `□` was O.

Wait — no — look carefully.

In the key:

- `□` appears under O and Y?

Wait — no:

Let’s list them:

| Letter | Symbol |
|--------|--------|
| A | 🎒 |
| B | + |
| C | ← |
| D | O (circle) |
| E | ○ (empty circle) |
| F | ♦ (diamond) |
| G | 🍎 |
| H | → |
| I | 🚌 |
| J | 🌀 |
| K | * |
| L | ● |
| M | ♥ |
| N | 📄 |
| O | □ (square) |
| P | x |
| Q | 😊 |
| R | 🖋️ |
| S | ★ |
| T | △ |
| U | ↑ |
| V | ◎ |
| W | - |
| X | ~ |
| Y | □ (same as O?) |
| Z | ✿ |

Wait — O and Y both have □?

That can’t be.

Wait — no — look:

Under O: `□`
Under Y: `□` — same symbol?

But that would mean O and Y are both represented by the same symbol — impossible.

Wait — let’s look at the image carefully.

In the key:

- For O: it shows a square (`□`)
- For Y: it shows a square (`□`) — same symbol?

But that’s a mistake.

Wait — no — look again.

Actually, in the key:

- O = □ (solid square)
- Y = □ (but is it the same?)

Wait — in the image, the symbol for O is a square, and for Y is also a square — but they are identical?

That can’t be.

Wait — perhaps it’s a typo.

Wait — no — look at the actual image.

Actually, upon close inspection:

- The symbol for O is a square
- The symbol for Y is a square — but they are drawn differently?

No — both are squares.

Wait — perhaps it’s a mistake in the key.

Wait — let’s count the symbols.

There are 26 letters.

Symbols listed:

1. 🎒 (A)
2. + (B)
3. ← (C)
4. O (D)
5. ○ (E)
6. ♦ (F)
7. 🍎 (G)
8. → (H)
9. 🚌 (I)
10. 🌀 (J)
11. * (K)
12. ● (L)
13. ♥ (M)
14. 📄 (N)
15. □ (O)
16. x (P)
17. 😊 (Q)
18. 🖋️ (R)
19. ★ (S)
20. △ (T)
21. ↑ (U)
22. ◎ (V)
23. - (W)
24. ~ (X)
25. □ (Y) — same as O?
26. ✿ (Z)

Oh! Here’s the issue: O and Y both have □ (square).

But that can’t be — they are different letters.

Unless it’s a typo.

Wait — perhaps Y is supposed to be something else.

Wait — in the key, after X (~), we have:

- Y = □
- Z = ✿

But O is also □.

So both O and Y are assigned to the same symbol.

That’s impossible.

Unless it’s a mistake.

Wait — perhaps O is not a square.

Wait — let’s look at the key again.

In the image:

- Under O: a square (`□`)
- Under Y: a square (`□`) — same symbol

But that’s a problem.

Wait — perhaps the symbol for Y is different.

Wait — no — in the image, both are squares.

But then how can we distinguish O and Y?

Unless it’s a typo.

Wait — perhaps O is represented by a circle, and Y by a square.

But in the key:

- D = O (circle)
- E = ○ (empty circle)
- O = □ (square)
- Y = □ (square)

So O and Y both use square.

That’s a conflict.

Wait — perhaps the symbol for Y is meant to be a rectangle or something else.

But in the image, it’s clearly a square.

This is confusing.

Wait — perhaps it’s a design error.

But let’s assume it’s correct — then O and Y are both □.

But then we can’t distinguish them.

But in the message, we have:

Line 4: □ ○ 🎒 🖋️ !

So: □ = ? (either O or Y), ○ = E, 🎒 = A, 🖋️ = R

So: ? E A R

If it’s “YEAR”, then Y = □, E = ○, A = 🎒, R = 🖋️

So: □ = Y, ○ = E, 🎒 = A, 🖋️ = R → YEAR

Yes!

So even though O and Y both have □, in context, it must be Y here.

Similarly, in the key, O is □, but in the message, when we see □, we need to determine from context.

But in the key, O is □, Y is □ — so it’s ambiguous.

But since “YEAR” is a common word, and “OEAR” isn’t, it must be YEAR.

So □ = Y in this case.

Therefore, the code allows for ambiguity, but context resolves it.

So line 4: □ = Y, ○ = E, 🎒 = A, 🖋️ = R → YEAR!

Perfect.

Now, back to line 3: + ○ 🎒 🍎 🖋️ ○ 🎒 △

= B E A G R E A T

So: BE A GREAT

But “BE A GREAT” — but “GREAT” has an A, so it’s fine.

But we need “BE A GREAT YEAR!” — so “BE A GREAT” is incomplete.

But the message is:

WELCOME BACK!
IT’S GOING TO BE A GREAT YEAR!

So line 2: IT’S GOING TO
Line 3: BE A GREAT
Line 4: YEAR!

But “BE A GREAT” is not a sentence — it’s part of “BE A GREAT YEAR!”

So perhaps the punctuation is off.

But the exclamation is on line 4.

So the full message is:

WELCOME BACK!
IT’S GOING TO BE A GREAT YEAR!

But we have:

- Line 1: WELCOME BACK!
- Line 2: IT’S GOING TO
- Line 3: BE A GREAT
- Line 4: YEAR!

So together: WELCOME BACK! IT’S GOING TO BE A GREAT YEAR!

Yes — that makes perfect sense.

Even though “BE A GREAT” is split, it’s clear.

So the decoded message is:

> WELCOME BACK! IT’S GOING TO BE A GREAT YEAR!

Final Answer:

WELCOME BACK! IT’S GOING TO BE A GREAT YEAR!

This is a cheerful back-to-school message from the teacher, using a fun symbol code to engage students.