SMITHFIELD — To a round of applause from an audience largely composed of teachers, the School Committee last night approved a shift of enough money in next year’s schools budget to cancel layoff notices issued to 11 teachers several months ago.

“It’s a horrible feeling to receive a pink slip,” said Joan J. LaFauci, acting chairwoman of the School Committee. “We’re glad to have you back aboard.”

The action means that all teachers who received layoff notices earlier in the spring will return in the fall.

However, Robert M. O’Brien, superintendent of schools, said the allocation of $1.1 million to finance the teacher jobs means cuts in textbooks, workbooks, supplies and equipment.

O’Brien last month had juggled $460,000 of budget money to bring back five teachers who had received layoff notices.

Last night’s budget adjustments included using surplus money from the current fiscal year’s budget, replacing a resigning teacher with one more junior and therefore at a lesser salary level, and replacing two teachers on leave with laid-off teachers.

Including other cuts, O’Brien said, the budget for next year has now been reduced by $1.6 million.

Teachers who were assured of being rehired for the next school year as a result of last night’s action were Dennis Almeida and Lisa Carter, Gallagher Middle School; Melisa Buratti, Erika Babat, Danielle Corsi, Deborah Fortier, Julie Moretti and Erin Dubuc, elementary schools; and Kelley Najarian, Smithfield High School.

O’Brien told the panel that some unpredictable factors could yet knock the budget out of whack.

He cited, for example, the estimate of $4 per gallon of diesel for School Department vehicles. “Our projection may by off by next year,” he said.

O’Brien said last week that in seeking the return of the teachers he used “some creativity,” such as not hiring replacements for two teachers who will retire from the Gallagher Middle School. He also reduced a full-time position at the high school to a part-time one when a teacher retired.

The loss of teachers would have been felt particularly at the elementary level, where the number of pupils has “maxxed out” classrooms, which by contractual agreement with the teachers union are capped at 25 pupils.

tmorgan@projo.com