Kendrick Castillo. (Colorado State Patrol handout)

A memorial service is planned for a student hailed as a hero for tackling one of two teenage gunmen who attacked his suburban Denver school.

Kendrick Castillo. (Colorado State Patrol handout)

A celebration of life will be held Wednesday at Cherry Hills Community Church in Highlands Ranch for 18-year-old Kendrick Castillo. Castillo was killed in the shooting.

Castillo and two classmates at the STEM School Highlands Ranch have been credited with helping thwart the attack last week by charging at one of the shooters in a classroom.

Castillo was a member of the school’s robotics club who loved to tinker on his projects and worked part-time at a manufacturing company. He was set to graduate days after he was killed.

Eight others were also wounded in the attack.

MORE: STEM School Highlands Ranch didn’t have school resource deputy because of disagreement with sheriff’s office

Colorado School of Mines graduates last week honored Castillo. KMGH-TV reports that electrical engineering students wore stickers on their caps bearing Castillo’s name during graduation ceremonies on Friday.

Formal charges are expected to be filed against the suspected shooters — 16-year-old Alec McKinney and 18-year-old Devon Erickson — on Wednesday. Both McKinney and Erickson were also students at the STEM School.

Meanwhile, the last student still hospitalized after being wounded in last week’s shooting was released from the hospital over the weekend.

Littleton Adventist Hospital said in a statement that the patient brought there after the attack was allowed to go home on Sunday.

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