Schools in Sentinel, Oklahoma, the US. Schools locations in Sentinel, Oklahoma. Find the nearest schools locations, near you. All types of business services ATM Finance Funeral home School All schools in Sentinel Blanche Thomas High School School +1 580-393-2112 708 East Washington Street, Sentinel, Oklahoma 73664 Write a review Phone Website Directions Head Start Child Development School +1 580-393-4303 3rd & Grant, Sentinel, Oklahoma 73664 Write a review Phone Directions Port School Historic Monument School E1250 Road, Sentinel, Oklahoma 73664 Write a review Phone Directions