Correction:     Student's sentence        Corrected sentence        Grammar explanation       Better sentence   

1. I'll educate children to grow up well.

First of all, sentences should be written in paragraph and not in number forms. 

This sentence is correct. 

2. If children fight because misunderstanding their opinions, I'll respect and accept everyone's opinions.

If children fight because of misunderstanding, I'll respect and accept everyone's opinions.

"because of"

3. I won't be angry with the children as much as I can.(except in specialcircumstances.)

For the lastly,

I will help children develop consideration and social skills.

I won't be angry with the children as much as I can except in special circumstances.

Lastly, I will help children develop consideration and social skills.

Instead of for the lastly, just write lastly. 

I'll educate children to grow up well. If children fight because of misunderstanding, I'll respect and accept everyone's opinions. I will help children develop consideration and social skills. I won't be angry with the children as much as I can except in special circumstances. Lastly, I will help children develop consideration and social skills.

Don't forget to write your own title and if possible, write a good introduction as well.