"I think successful small businesses are responsive to customers," said Hellman, who estimates he spends a couple of hours a night responding to e-mails and troubleshooting.
Though he doesn't believe Planbook takes a toll on his teaching, Hellman said it takes one on his free time, and is considering hiring help.
He wouldn't rule out leaving teaching to focus on Planbook full-time, but Hellman said he's happy where he is.
"It gives me the opportunity to do the same thing I was doing before, only electronically," said Elmira math teacher Joel McCowan, one of four Elmira teachers who have started using Planbook (Hellman gave the Fern Ridge district free rights).
Many praise Hellman for his quick and effective customer service.
Though he doesn't believe Planbook takes a toll on his teaching, Hellman said there's no question it does on his free time, and he's pondering whether to hire some help.