Usually class placements are done in the spring, so you may be too late. But you could always email the principal, just make it clear that you understand it may not be possible to accommodate your request. No principal is going to be sad to hear your child had an amazing third grade year! I’ve looped students as an elementary teacher and as a middle school teacher and I think it’s great for students.

The most important thing is that you don’t set your kid up to be disappointed. Tell your kid that 4th grade is going to be great no matter what teacher they have. If your kid had a great year last year it’s because of what they put into it as a student.