SD9T in a high school -- absolutely wouldn't. I would lean more toward
Yamaha CL, maybe DM7 -- but DM7 is far more horsepower than you need. There are other brands that would be fine as well, but Digico desks are near impossible for students to understand. The
level of complexity makes it extremely difficult for students to actually learn the basic concepts of signal flow, processing, and mixing.
Yamaha is good because QL/CL/Rivage/DM are all
very consistent in their workflow across the different models. They're easy desks to learn -- if you learn on a CL you can easily step in front of the other desks in the lineup with a few minutes to acclimate to where certain knobs are -- there are also a ton of QL/CL desks out there in the wild so that experience for the students will be widely applicable -- even if someone is stepping in front of a
desk from Allen & Heath, Soundcraft, or anyone else. The basic workflow of
Yamaha is a great stepping stone for students to learn from and take that experience elsewhere.
Don't get me wrong -- Digico is top tier -- but in a high school environment it will be crippling for students to learn and effectively operate. If they spend all their energy just trying to
navigate the
desk before they even understand how to a mix a show or EQ some mic's during soundcheck, whatever experience they may get from that will be near worthless anywhere else. Digico is first and foremost a
desk for festivals, professional touring acts, Broadway-like venues, and broadcast. It's highly unlikely any of your students would graduate and ever find themselves in front of one ever again -- and if they do, it'll be 5-10 years down the
road.
But before you lock in on anything, try to get a really strong sense of the full scope. You're probably talking more
power, more cabling,
network switches, new infrastructure, maybe new structural points for rigging. I don't know how comprehensive your pricing on that first wave of equipment proposals was, but I'd really make sure all of the gaps are filled in before you commit to high-end equipment that's probably more than you practically need. I would also make sure that if you were just spitballing the Meyer
array, that you have an actual acoustical model of the space made and have someone validate the design, coverage, aiming -- using
EASE and not just their MAPP software. The best sounding speakers in the world aren't worth very much if they don't provide full and balanced coverage. There will also be other costs associated with the initial sound
system installation, rigging hardware, tuning, programming,
etc. If a bunch of these factors were part of your original pricing, awesome! But if not, you may end up throwing all those initial part numbers out as you
zoom out from the products and capture the other components, labor, materials, and infrastructure necessary to support the overall
system.