LISBON — School Superintendent Richard Green on Monday suggested taking a step back before updating the district’s Strategic Education Plan.

The district’s large turnover rate is the biggest issue when moving forward with a plan, Green told the School Committee.

This year there are 20 new professional staff members and only four planning team members remain from when the Strategic Education Plan was originally created, he said.

“It’s hard to revise something when you don’t own it,” Green said.

He is planning a community event in January to showcase the district’s progress, share the current plan and receive suggestions from citizens on ways to update and revise it.

“It makes sense to regroup, talk about what we’ve accomplished and set new goals,” committee Chairwoman Traci Austin said.

In other business, administrators reported standardized test results from the Northwest Evaluation Association, the SATs and the PSATs.

At Lisbon Community School, improvement was about four times higher than the national average for the NWEAs. The middle and high schools also saw growth on tests in math, writing and reading.

“I don’t want to say I’m thrilled, but I’m certainly happy with what I see,” said Philip W. Sugg Middle School Principal Darren Akerman. “It shows some structural continuity within the district. I think that’s important. It speaks to all the schools, the administration and the teachers who did a marvelous job.”

The next School Committee meeting is Monday, Oct. 23, at 7 p.m. at the Lisbon Town Office.