Schedule E must be used by organizations that file IRS Form 990-EZ to report information on private schools.
You have to answer "Yes" to Line 48 of Part VI in the Form 990-EZ if your organization is a school and attach a Schedule E along with your Form 990-EZ.
The organization that attaches a Schedule E will also have to attach a Schedule A along with its annual information return because a school will be considered as a public charity status and public support.
The Schedule E along with Schedule A will be generated automatically while filing your Form 990-EZ using the "Interview-Based" filing in ExpressTaxExempt. Both Schedule A and Schedule E will be made available to you depending upon the information you enter in your Form 990-EZ using the "Form-Based" filing in ExpressTaxExempt.