Q&A for How to Make a Secret Note

Talk to them somewhere private (phone, bathroom, text, etc.) and make sure they understand before you start to pass the notes. You could do a practice run to begin with, showing them a blank note in the format you intend to use and getting them to open it or read it as prepared.

Some teachers who are very close to you and don't scold you maybe will forgive you. But you must still be careful as the teacher will still be upset as you were passing notes and you may get in trouble.

If it is in code, the person who intercepted it won't be able to read it.

Wait until both of you are closer, or keep it in your pocket in case you see them.

A popular code is the backwards language, but that is quite easy to figure out. You could also create an entire alphabetized language, such as A is 1, B is 2, C is 3, and so on.

Just make your code or codes really complicated, and have a few on hand, so you can change up which one you use at a given time.

Distract them. Give them a book or game or something else they may like that will occupy their time, so they don't pay attention to you.

Tape it under a drawer, like your underwear drawer or sock drawer. No one will ever look under your underwear drawer.

Yes. For example, you can use lemon juice as invisible ink.

Scrunch up the paper into a ball and discreetly throw it at them. It will attract their attention so they will read it, but time it carefully so others will not see you do it.

It is a method of encrypting (disguising) written information by systematically substituting certain letters for others. Wikipedia has an article explaining it in detail.

Ask them beforehand to keep it a secret! If they're a true friend, they'll respect your wishes and keep it a secret. If you have a reason to believe they won't keep it secret, you shouldn't tell them anything personal that you want to be kept private in the first place.

While diary and journal are synonyms, there is an important difference: A diary is strictly a record of personal and daily experiences. Whereas, a journal could mean a more general record or logbook but more importantly a technical journal, that is a scientific or industry-related publication/periodical.