Extra counselors are available today at Canandaigua Academy following the sudden death Tuesday of social studies teacher Todd Feldman, according to the district.

CANANDAIGUA — Memorial tributes on behalf of Todd Feldman are continuing to be posted to Facebook and other social media pages as the family plans services for the Canandaigua Academy social studies teacher who died unexpectedly Tuesday.

“You brought light into this world and when you left, you did not take it with you, as it is now in the hearts of everyone you've ever spoken to, laughed with, loved, taught and been a friend to,” posted Allie Baker, identifying herself as a registered nurse at Lifetime Care Home Health Care and Hospice. “RIP Todd Feldman. There is so much more I wish we could talk about.”

Wende Luellen Cleary wrote she was “saddened beyond words,” and would see Mr. Feldman “on the other side.”

Audra Stark, whose page lists her as living in Washington, D.C., said Mr. Feldman tremendously impacted the lives of his students.

“Although history was always one of my favorite subjects, you are the person who helped me transition from the child's version to the analytical study of it,” she wrote. “You are up there with the very small handful of teachers and professors who changed my life and helped me view the world differently. I know that you will be missed and that future generations of students will be worse off for never having had the opportunity to learn from you.”

The cause of death of Mr. Feldman, who has been with the Canandaigua City School District since 2004, could not immediately be confirmed and may not be made public.

Extra counselors will remain available for several days at the high school to assist students and staff in coping with the loss, according to Andrew Thomas, the district's community relations coordinator.

He said the district mobilizes anytime it has a situation dealing with the loss of a student or staff member, bringing together counselors and psychologists from throughout the district.

“He was a very fine teacher,” Thomas said of Mr. Feldman. “He had immense respect from his colleagues for his teaching abilities. Anytime that the education world loses a person of his skill in the classroom, it's a tragedy.”

Arrangements are being handled by the Fuller Funeral Home, which is expected to release details on Thursday. Tamra Feldman, the teacher's sister, wrote on Facebook that a memorial to celebrate Mr. Feldman's life will be from 10 a.m. to 2 p.m. Saturday at the funeral home, 190 Buffalo St.

Mr. Feldman, according to the district's website, taught Regents U.S. history and Advanced Placement U.S. history standards and was instrumental in developing an Advanced Placement psychology course that he taught at the academy. He was one of a handful of district teachers certified as a master teacher, earning the National Board Teacher Certification in 2009 from the National Board for Professional Teaching Standards. Prior to joining Canandaigua schools, Mr. Feldman taught social studies in Irondequoit for 10 years.

Thomas confirmed Mr. Feldman had been on administrative leave since mid-November. He had been charged by state police with one count each of falsifying business records and first-degree offering a false instrument for filing with intent to defraud.

District posts at the time noted the alleged incidents did not occur at the school, nor were they related to his teaching abilities.

According to court personnel, Mr. Feldman pleaded guilty to the charges April 17 and was scheduled to be sentenced on July 10. The indictment will likely be sealed in the wake of Mr. Feldman's death.