What a coincidence, just yesterday we saw a bulletin board up along the side of the road in front of the grammar school over in Greenland, NH., that they need an aide for this upcoming year. Check that out may be? That is, IF you wanted to be on the seacoast of NH eventually to live. There's Sacred Heart's grammar school in Hampton and St. Thomas Aquinas HS in Dover, both fantastic parochial schools, I know because my nieces & nephews went to them! Although St. Thomas is evidently non-denominational, whatever, it's still quite a good school just the same!
Check the Hampton Union or the Seacoast online site for these type of jobs, this time of year we always see them listed there:
Seacoast Online - The Source for Seacoast New Hampshire and Southern Maine
Good luck!