Although the Cambridge School Committee is scheduled to vote tomorrow on the union of the Fletcher and Maynard elementary schools, city officials have yet to determine how the new school facility will be funded, officials said.

Superintendent of Schools Bobbie J. D'Alessandro will meet today with Cambridge City Manager Robert W. Healy to push for municipal funding of the merger.

D'Alessandro called the meeting "very critical."

Without a guarantee of funding from the city, the vote will likely have to be postponed and the proposal as a whole could be jeopardized.

According to a plan drawn up by a steering committee of parents, teachers and administrators and submitted by D'Alessandro to the school committee last week, the new school would cost around $12 to $15 million dollars and would be located either in a new facility or in a renovated Fletcher or Maynard building.

"We will talk about the whole capital plan, with specificity on Fletcher-Maynard," said D'Alessandro, who declined to elaborate more specifically what she will ask Healy for today.

At a meeting last Wednesday, where officials from the city manager's office showed school officials preliminary budget numbers, school officials discovered the city manager had not allocated any money for a new or renovated facility.

School committee members first addressed the issue at an informal public forum Saturday.