An estimated 300 Lawrence High School students march on Wednesday from the school to the SAD 49 Superintendent's office in Fairfield in a silent protest regarding restructuring that led to the resignation of popular Principal Mark Campbell.

Bryn Mayo, center left, and Emma Robillard, wearing track shirt, were among the Lawrence High School students who staged a silent protest on Wednesday outside the SAD 49 Superintendent's office in Fairfield regarding restructuring that led to the resignation of popular Principal Mark Campbell.

An estimated 300 students from Lawrence High School assembled outside the SAD 49 superintendent's office on Wednesday in a silent protest regarding restructuring that led to the resignation of popular Principal Mark Campbell. Many carried signs, including Bryn Mayo, lower left.

Lawrence High School student Marian Zawistowski, left with sign, and an estimated 300 other students from all grades assembled on Wednesday outside the SAD 49 superintendent's office in Fairfield in a silent protest regarding restructuring that led to the resignation of popular Principal Mark Campbell.

Lawrence High School student Levi Ficalora-Rose holds a sign in support of former Principal Mark Campbell during a protest outside the SAD 49 Superintendent's office in Fairfield on Wednesday. Ficalora-Rose said, "Campbell was a super principal and he is in my heart."

Lawrence High School students display the signs they carried in support of former Principal Mark Campbell in a silent protest outside the SAD 49 sSuperintendent's office in Fairfield on Wednesday.

Lawrence High School student Carson Hersey holds a sign in support of former Principal Mark Campbell amid an estimated 300 students who assembled outside the SAD 49 Superintendent's office on Wednesday in a silent protest regarding restructuring that led to the resignation of Campbell.

Lawrence High School student Nathan Lafreniere expressed his views in support of former Principal Mark Campbell during a protest regarding his resignation outside the SAD 49 Superintendent's office in Fairfield on Wednesday.

An estimated 300 Lawrence High School students from all grades return to class on Wednesday following a protest outside the SAD 49 Superintendent's office in Fairfield regarding restructuring that led to the resignation of popular Principal Mark Campbell.

Lawrence High School Principal Mark Campbell in the school's 2017 yearbook. Campbell resigned on Friday.

Shelley Rudnicki, chair of the MSAD 49 school board, at a recent school board meeting at Lawrence Middle School in Fairfield. Lawrence High School students staged a silent protest on Wednesday regarding restructuring supported by the school board that led to the resignation of popular Principal Mark Campbell.

Reza Namin, superintendent of MSAD 49, listens Friday at a meeting at Lawrence Middle School in Fairfield. Lawrence High School students staged a silent protest outside the superintendent's office on Wednesday regarding a restructuring plan devised by Namin that led to the resignation of popular Principal Mark Campbell.

Police and school officials provided security for Lawrence High School students who marched from the school to the SAD 49 superintendent’s office to stage a silent protest regarding restructuring that led to the resignation of popular Principal Mark Campbell on Wednesday. Access to school grounds were blocked prior to and during the action.