Terms of recently signed teacher contracts on Long Island, as summarized by union and school district officials. In addition to these raises, each district pays most teachers annual "step" increases - generally 3 to 3.5 percent - for experience and additional education.

FLORAL PARK-BELLEROSE Three-year contract; raises of 3 percent to 3.5 percent yearly. Teachers pay a higher share of health insurance costs, and provide an additional evening conference with parents.

GREAT NECK Two years; first-year raises of $500 to $1,000 that district officials say are equivalent to a 1 percent increase. Second-year raise of 2.44 percent.

HERRICKS Five years; raises of

2 percent to 3 percent.

MIDDLE COUNTRY One-year contract extension; raise of 1.5 percent.

SACHEM Four years; raises of

1.5 percent to 2.5 percent. Union officials say annual step increases

are improved, which district officials say will be delayed in the second

and third years.

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SEWANHAKA Three years; raises of 2.75 percent to 2.9 percent. Increases number of years teachers work before qualifying for health insurance in retirement.

SYOSSET Three-year extension; annual raises of 2.75 percent. Teachers give up some sick days, and pay a higher share of health insurance costs.

WEST BABYLON Four years; raises of 1.75 percent to 2.3 percent yearly. Teachers will devote more time to training and offer more extra help to students during school hours; some after-school duties eliminated for teachers.