It's impossible to say for sure without more information. There are many schools named "Abbey Mount" or similar. To find out if a specific school is real, you need to provide more details:
* Location: Where is the school located? (City, State/Country)
* Type: What type of school is it? (Elementary, High School, College, etc.)
With more information, you can use search engines or directories to find the school you are looking for.