MINNETONKA, Minn. (AP) - Minnetonka High School is making counseling available for students who may be struggling with the deaths of three classmates.

The three teens were among five Greenwood family members killed in what police call an apparent murder-suicide.

In a letter to parents, Principal Jeffrey Erickson says the school community is devastated. He says guidance will be available for walk-ins or small-group counseling Friday, and will continue as needed.

Erickson tells The Associated Press the suburban school of 3,100 students is "going through a lot of grief." A moment of silence is planned for Friday night's home football game against Wayzata .

On Monday, all students at Minnetonka High School are encouraged to wear blue for "Tonka Unity Day" in remembrance of the students.