Nazreen, educational qualification refers to the highest degree or level of exam you have qualified uptil a point of time.

If you are applying for class 11, this means that you have already passed your class 10th boards exam or will be completing it in 2020 before you join the 11th class school/ college.

So you should select '10th pass' or 'High School qualified' or 'Matriculation' or any other similar term as given in the application as your educational qualification.