The OP brings up some good points, and all are debateable.
Should illegal immigrants get education? On the surface this is easy. No, you don’t reward people for illegal behaviour. BUT how can you deny to a child something that isn’t his fault. Almost all children who are illegal immigrants are here with their parents or relatives. A child can’t say “OK Daddy, you go to the USA, I’ll stay in Mexico 'cause I don’t want to do wrong.”
So why should the child suffer 'cause the parents are doing something wrong? So there is the first debate.
On the question of supplies, this really should focus on, do you need all this fancy stuff to teach a solid education. The answer is no. I got a great education, graduated from one of the best universities in the nation. I never even used a calculator till college.
Children who don’t have a grasp of math and can’t read or write well enough to fill out a job application, are not going to be helped by computers and other material items.
In my day supplies were not given, they were issued. For instance, in kindergarten and 1st grade, we had pencil monitors. They were given 20 and passed them out. Then collected them when the exercise was done. (This also helped up learn to count).
So a give and take policy for supplies would help this. It wouldn’t end it but it would make it alot easier to hold students abusing supplies to be held accountable.
The other issue is allowing kids to leave school early. I agree a HS diploma is meaningless. As most of you know I’ve been looking for work and I’ve participated in a lot of state programs that are supposed to help you look for work or find it.
I can’t tell you the number of people who can’t read or write well enough to fill out a job application. And they GRADUATED high school. They don’t understand what words on a job application mean. How is it possible for you to get through high school and not be able to do this?
If high school is supposed to prepare you for life and you can’t fill in a simple job applications from McDonalds, you have no hope.
I agree some kids who don’t want to be in school, shouldn’t be, but it doesn’t mean to abandon them. A 13 or 14 year old who doesn’t want to finish school and is doing everything in his/her power to stay away, shouldn’t be allowed to quit. A child that young isn’t mature enough to decide that.
Instead there should be vocational training. OK you don’t want to go to school, fine then train him for a job. Bring back the old apprenticeship. I’m not saying the student won’t need skills, but a general high school course may be too broad and discouraging or uninteresting to a child. A focused career path may help him more.