@StarWarsGirl
My guess is the cost of overhauling a school for A/C vs the price of iPads are worlds apart in price even with as expensive as tech is. If a building was not built for A/C the main boiler room, vents and electrical system must be reworked. We did all this in conjunction with a building soundproofing for airplane noise back in the '80s. The soundproofing was a grant from the Feds but had to be fronted by school district. Long story but it took years to get the money back from the Feds and our loans were almost paid off which the District had a tax referendum to pay for. Even window units generally require a building rewiring to support the electrical drain. Window units also create more of a security risk as windows do not lock down and units can be stolen or pulled to gain access to buildings. So many issues.
Our attorney's put a backdoor in that '80's referendum (kinda tricked the taxpayers legally) and as long as the loans were left open the district could keep loaning extra money. We have used that for major repairs over the decades. We do not have to go back to the taxpayers and go to referendum to loan large sums of money for construction. When we finally received reimbursement from the Feds for the original funds owed for soundproofing which was like 10 million (small district) district put that money into reserves and is never touched, it is a rainy day or disaster fund. But the money in reserves now close to a full year budget affords the district a much lower interest rate for projects and a perfect bond rating. But the district has always been mindful when taking out additional bonds that those funds must be paid back out of the yearly budget so something else will get less funding that year.
Laws require funds received for budget years be spent or basically returned to taxpayers so it isn't like you can 'save up.' Also school budgets and line items cannot be reallocated without a great deal of effort and some items if funded or partially by state or Feds needs to be used only for those line items. So like us if there is a tech grant the district cannot move those funds into a Capital Project like A/C, it is against the law. My feeling is your district must put a tax referendum on the ballot to get permission from the taxpayers for a major Capital Project. It only needs a simple majority to pass however advocates for lower taxes are usually the ones that come out in droves to defeat tax increases. If it is something you genuinely feel strongly about you can address your school board and start the process of requesting your district go to referendum to rehab the school buildings that lack A/C. For us way back then A/C was necessary to soundproof the buildings so the original referendum of the 80's was easier to get the community behind.
I sometimes believe School Boards and administrators get a bad rap for how funds are spent. Not everyone has a good understanding on how a budget is constructed, attends meetings when districts are constructing the line items for budgets or grasps the rules of funding for sources like the State and Feds vs local tax revenue. They just look at a pile of money and don't think through what needs to be spent on students vs buildings and construction or mandates for special education funding along with transportation. It really makes ones head want to implode. And note here anyhow aside from Chicago, boards are an elected position (we can be voted out) and it is a volunteer of time, we do not get paid.