Members of the schools consolidation planning commission want more work on the structure of the consolidated countywide public school system to come.

The group spent much of its meeting Thursday, March 1, talking about a structure that would create two tiers of schools – those in a centralized school system with sub regions and those in a “path to autonomy” school system similar to charter schools.

The rub for the group is how to get the tiers to coexist within one school system instead of one tier being on top of the other.

The planning commission had tentatively scheduled a vote on a structure for Thursday’s meeting but it quickly became apparent there were more questions than certainty.

Planning commission chairwoman Barbara Prescott will work with Boston Consulting Group, the group hired by the commission to help with the planning process, to come up with adjustments to the plan rolled out last month by a committee.

The planning commission will discuss the issue at its meeting Thursday, March 8.