Mary Sue Johnson, a longtime teacher at Glorietta Elementary School in Orinda, died Monday afternoon at Pacific Medical Center in San Francisco from complications after a planned heart valve surgery.

A memorial service will be held at Campolindo High School's PAC auditorium, 300 Moraga Road in Moraga, at 3 p.m. on Saturday and all are welcome to attend.

Johnson, a Moraga resident, was 63.

In a community e-mail Tuesday, Miramonte Parents' Club Co-Presidents Laurie Smith and Mary Maxson said Monday's valve replacement surgery had been planned, and that the complications were unforeseen.

Sue Johnson grew up in Saginaw, Mich. and attended the University of Michigan. She served as a Vista volunteer in Missouri and later moved to Price, Utah. She married and moved to Colorado, later moving to California. In addition to being an accomplished and popular teacher, Sue was an avid reader and a world traveler.

Johnson loved teaching, Smith and Maxson said, considering it a passion and not a job.

Sue is survived by daughter, Katherine Johnson, and son, Matthew Johnson. In lieu of flowers or cards, gifts can be made in memory Sue Johnson at www.donorschoose.org, a nonprofit that connects public school teachers with people who want to support classroom learning.