I can see offering trig, pre-cal, and geometry to some minor degree, but let’s face it...eighty percent of the kids in school today don’t need these skills. If we are pushing a bunch of kids toward this...we are simply wasting resources and time. If a kid is gifted and able to grasp this area of math...fine, open the door and find some method to introduce it. Otherwise, they need to think about the value of some of this stuff and the real world. It’s like offering chemistry or biology classes to a sixteen year old kid, who will end up as a baker’s assistant at Wal-Mart in two years.
Forget the algebra, solid geometry, and any form of Calc in any form for all but the gifted in math.
Teach the kids how to balance a checkbook, pay bills, make change and do inventory to plan shopping.
After college, I use geometry in everyday driving/parking, walking,fishing, in my younger days archery shooting, shot gun shooting, rifle shooting and pistol shooting.
As, a Rube Goldberg home owner, flyfisher and kayaker, I use geometry and plain math every day. My bride of 50 + years is a type A OCDer in how she rearranges our house inside and out. I use pencil/paper, measuring tapes/sticks, levels and basic math to help position what is removed and replaced with. I have a DeWalt drill and driver to position the needed screws/holders/molly bolts, hanging wires for inside jobs. For my outside stuff, same stuff plus heavy duty tools to move stuff and to stand on during and after positioning.
After college, 50+ years later, I have never used Algebra, solid geometry or calc in any form even with a MBA and being in the Navy Security Group which required high math scores to be considered for the NSG and to be in a MBA program.
So quit wasting time and money trying to teach these unneeded math courses in mid and high school.
Teach basic real math, basic accounting, basic mechanics and electricity uses and cooking skills to prepare 99% of our kids for real life.