Proximity Learning Substitution Services 1 If your school district needs to cover a vacant course quickly, we can provide one of our teachers as a substitute. Mathematics Algebra I Algebra II Geometry Calculus Middle School Math Science Biology Chemistry Physics Middle School Science English High School English Middle School English ESL ELL or ESOL Social Studies World History US History Geography Economics AP Economics Middle School Social Studies World Languages & Communications Spanish French Chinese Japanese Latin German AP German Elementary Substitution Special Education Special Education Speech