This room needs to be really soundproofed because there are classrooms bordering the studio. We need to make it very soundproof so we can try to record during school hours. If this is not possible without spending tons of money then I guess we will just record after school.
Hello again patlang12. Well I just re read your whole post, and the site for the school. Very interesting. However, there are some things here that need to be clarified before any serious dialog about what and how to soundproof begins. I'll start here.
I am designing a studio for my school.
First off, and I could be wrong, but I don't think you are qualified and I also think you are being niave. Not in the sense that you might think though. Its not studio design that is in question. It is meeting law that is the question here. And I'm not just talking about construction codes.
You see, this is not a residential project. It is an educational institution, and as such there are tons of codes that you MUST comply with by way of submitting a set of plans to the Building Inspection Department. The very first one, is YOU must be a licensed architect to even submit plans for educational facilitys. I can tell you right off the bat, that even a small remodel of a class room has serious implications. Especially in California. I delt personally with a very small 1 room classroom in a commercial building and it was a TOTAL NIGHTMARE to get it through the permit process.
Just to put in a small office with 2 doors and a window, electrical and upgrade the bathroom to meet Title 24, was a lesson in reality checks

Here are a few issues to illustrate. This is by no means complete.
Building Type
Occupancy Load
Egress.
HANDICAP(title 24 codes)
Sprinklering Systems/fire retardant fabrics etc.
Electrical Loads/schematics to load centers
Lighting calculations(must meet new energy laws)
HVAC(soundproof is AIRPROOF which is NOT allowed by code

) You CANNOT simply use existing ductwork, as EVERY room must have supply and returns to meet criteria set by code. AND location of registers must be on reflected ceiling plan.
Panic compliance(hardware to eliminate being trapped such as exit lighting, lever latchsets with proper locking schedules, etc,
Add to this various soundproofing mechanical requirements and you will add to the code compliance nightmare...no ifs ands or butts. This is a EDUCATIONAL FACILITY, which means it is an institution. If experience tells me correctly, you cannot submit plans for this project unless signed off by a licensed architect. I would consult with your dean in this regard.
Personally, from my own experience dealing with the Building Inspection Department, this is NOT a fly by the seat of your pants nor planning via a forum situation. I would venture to say, the facility manager or dean will tell you that this must be submitted for approval by the county AND it must be done by licensed architect. However, this is ONLY my .02 and is subject to EXPERT opinion. But maybe you know something I don't.
fitZ