AITA for not wanting to drop charges on a 10 year old kid who assaulted my 9 year old daughter?

AITA for not wanting to drop charges on a 10 year old kid that beat up my 9 year old at school? Some background my kids go to a school where over 90% of the student population are refugees/ immigrants. We live in a neighborhood that is the same circumstances as my kids school. Cut to yesterday. My 9 year old girl was out at recess. She was playing basketball with friends. This bully walked up behind her, pushed her to the ground and when she was getting up the kid kicked her in the head like it was a soccer ball. My wife went down to check my girl out of school. She'll be ok, I hope, but she has scratches on the side of her face, a black eye and it's swollen. School principal said he'd handle it. Later on he called my wife and I separately and asked us to drop the charges because the student doesn't "understand" that what they did was wrong. I told the principal that if the school isn't going to discipline the bully I will call the police department and files charges. AITA for not wanting to drop charges on a 10 year old kid?

This is a screenshot of a user post from the Reddit community r/AITAH (Am I The A-hole?). The original poster (OP) details that their 9-year-old daughter was physically assaulted at school by a 10-year-old student: the daughter was pushed to the ground during recess and kicked in the head like a soccer ball, resulting in a black eye, swollen face, and scratches. The school principal initially said he would handle the incident, but later asked the OP and their wife to drop potential charges, claiming the bully does not understand their actions were wrong. The OP has threatened to contact police and file charges if the school fails to discipline the bully, and is asking the Reddit community if they are in the wrong (AITA) for refusing to drop charges against the 10-year-old. The post is marked NSFW, likely due to the description of violence against a child.

This image is a direct screenshot of a post from the Reddit platform, specifically from the r/AITAH subreddit, a space where users share personal situations and ask the community to judge if their actions are morally justified or if they are the one in the wrong. The post was created by user u/Distinct_Sentence_26, 6 days before the screenshot was captured. There are no signs of editing or remixing; this is an unaltered screenshot of the original user-generated post.