Yes it is the proper English way to write it
Sister-in-law
It's purpose is to promote the "Make A Difference Day" program which encourages people to make a difference, together! It has been used as a tool to make announcement, create instructions, promote awareness and calls for an action to be done in relation to the programs vision.
B.
Homeschooling is an education system where a child is taught in his or her home.
What? Can you explain your question please?
