So, a question many high school homeschool families ask when planning for teaching math is, what is the correct math sequence for high school? For most students, what comes first doesn't matter. The most important thing is that your child is learning math consistently each year.
There are two typical math sequences for high school :
Algebra 1 > Geometry > Algebra 2
Algebra 1 > Algebra 2 > Geometry
Some textbooks follow one way, and some follow the other way. They all try to convince you their way is the right way! Mathematically, it doesn't matter which one comes first, Geometry or Algebra 2, to be honest. However, your child might benefit if they take geometry before 11th grade, to prepare for the PSAT and SAT.