A 17-year-old from College Place pleaded guilty Tuesday to second-degree assault and second-degree malicious mischief for breaking a window at College Place High School and striking the principal with a spear last June.

Lamont P. Oakhurst also faced a charge of second-degree assault for thrusting the spear at school employee Lucinda Fish, but that accusation was dropped as part of the plea deal, according to Walla Walla County Superior Court documents.

Oakhurst’s sentencing is set for Monday.

At one point in the case, it became unclear to the court whether Oakhurst would be mentally competent to stand trial. Similar against his brother, 19-year-old Jaymond S. Oakhurst, were dropped on Nov. 6 due to reasons of mental incompetency.

But Dr. Erin Gorter-Hines examined Lamont Oakhurst and found he was able to communicate “clearly and effectively.”

Gorter-Hines did indicate that the younger brother was cognitively at about a second-grade academic level and demonstrated possible signs of psychosis or schizophrenia, according to court documents. Stress also increased those symptoms, she said.

Her report conflicted with one issued by Dr. Nathan Henry in September that did not find Lamont Oakhurst competent, according to court documents.

However, Judge John Lohrmann reviewed both reports on March 9 and made the official decision — Lamont Oakhurst was competent to stand trial.

Lamont and Jaymond Oakhurst were students at College Place High School last year; Jaymond was an 11th-grader and Lamont was in ninth grade.

Officials say the brothers entered the adjacent middle school lobby on June 8, approached the locked administrative office and asked to see their sister. Lamont Oakhurst stuck a spear-like weapon through an open window, hitting Lucinda Fish in the chest but not injuring her, officials said.

He then broke the safety-glass window of the main office door with the spear. The two entered the office — he still holding the spear and Jaymond Oakhurst armed with a wooden staff — and confronted Principal Dale Stopperan.

They assaulted Stopperan with the spear and staff, partially severing his right ear and injuring his elbow and knee in the attack.

School personnel armed with small baseball bats drove the Oakhursts out of the building, where police arrested them.

The attack was motivated by the Oakhursts’ concern that a woman, who was their caretaker, was dying. They planned to get their sister out of school and run away, according to reports.

Tony Buhr can be reached at tonybuhr@wwub.com or 526-8325.

Tony Buhr can be reached at tonybuhr@wwub.com or 526-8325.