Your child can now understand things and is sensible enough to express emotions. He has crossed his pre-school training and is a regular at an academic institution. Good news is your child is now fully ready to start dressing up on his own for his school.
What you need to do
You as a parent need to make him adapt to new situations so that he can be self-dependent. You can teach him how to dress after some initial days at school. Start this training by helping him wear his shirt on his own. Demonstrate how to put the buttons through the shirt holes. The other step involves you to teach the kid how to wear his skirt, pants or shorts. Make the little one learn how to put one leg at a time through the space. This practice might also require you to show it to the kid so that he can learn quickly.
Wearing shoes and putting his belt are also important things which the child must learn. This training might take some days to perfect but you as a parent need to inculcate this into the child’s daily activities so that he doesn’t rely on you for dressing up for school.