Now, to answer your fundraiser issue:

It depends.

Since you're a 3A school, you're likely needing something that works in a small town. Catalog sales/stuff from a traditional "fundraiser company" IMO aren't worth it in your situation. Selling popcorn and candy only gives pennies on the dollar to your program and you have to contend with and keep up with/count a ton of cash. Cookie dough may work, but it's a complete pain to store, too, for those kids that "forget" to come get it the day it comes in.

One of my most successful fundraisers - over $1500 made in a 2A (now 3A with the classification bump) school in a four hour time period - was doing a community garage sale. People donated items to the school, we stored it, set up in the gym, and then people came and paid a buck or two an item (except for big ticket stuff). Only issue here is with storage. If you do this end of October/beginning of November, you're likely not hitting any major animal shows since the State Fair is over with, and you may be able to get the ag folks to share some space.

I've also seen mattress sales - but in a smallish town, that only works once. I've seen someone sell light bulbs, but if they're good quality, they won't need new in a year either.

We also made $750 in one evening doing a spaghetti dinner during Open House. We pre-sold tickets for $5 and charged $10 at the door per adult. Lots of parents showed up to Open House and then wanted to have dinner while they were there - and the cost of ingredients for that is very very low. If you make the sauce yourself (it's actually very easy) it's much cheaper than buying pre-made sauce out of jars. Grab a couple giant bags of salad and you're good - and your local Wal-Mart or Brookshire's may be willing to donate 100% of your ingredients.

Check with your district on simply using sites like DonorsChoose and/or other crowdfunding sites, and write the closest medium to large town to publicize it. Lots of people in those towns are "from" those small towns and will chip in $10-20 at a time.

Finally, there are tons of energy companies that are looking for tax writeoffs every year throughout Texas, and you can get a lot of very profitable companies to throw you $10k without blinking an eye. Don't go with the big names like Oncor or the like, but figure out who owns the closest power plant and give them a call. If in an area with oil wells, figure out who owns the rights and call their folks.

Your goal should be to get as much money coming in as possible with as little overhead/upkeep around it. My net cost for the garage sale was $50 for sale tags and price tags. The next year we even got a local BBQ place to donate a couple briskets and sold chopped brisket sandwiches too, but we didn't make quite as much money because the weather was pretty poor that day.

Good luck!