Im looking for a good software to help 9th students...

I need a good program to help me with teaching and grading. I need a program that accomodates my students and me. My students are very important to me, I want to provide the best way possible for them to learn. No matter the cost, im dedicated to my students. If i have to i will make my own software, im a software designer, but that will take to long. So can anyone Help me...