Is the school mandated by law to evaluate my child and his 504, for being truant?

I live in Albany County, New York. My son is having itually absent from school. His explaination about it ranges from depression, cannot focus with a class of 15 students, claims they don't help him enough, believes his teachers do not like him, over sleeps and is tired in the morning etc etc... I've asked the school on numerous occasions to evaluate my son for special education, as well as a reevaluation of his 504 since they failed to notify me BEFORE the committee meeting to determine his placements as well as his accommodations for class room issues as I did not have a say or making of such . My son has become increasingly truant and the school does not seem to be working with me to resolve the issue. Their response is they cannot help him if he does not come to school.. but when he shows up, they fail to address any of these issues and he circles back to skipping school again. What are my options to the school and what, as a parent, are my rights when dealing with the school