Although the summer job market is tight, and mostly sewed up, there are about 4,000 vacancies in government for needy youth and another 2,200 slots that will be made available through the D.C. Board of Education.

Metro area federal agencies plan to hire 7,800 needy students this summer for full-time ($2.90 per hour) jobs to help them earn stay-in-school money. Another 3,500 needy youths already working part-time for Uncle Sam will be converted to full time status for the summer.

For people in the "non-needy" category, most of the 5,800 regular summer jobs which take students as interns or vacation - replacements in federal agencies have already been promised. They will go to young people who took tests and / or the necessary steps this winter. Those jobs are gone! Filled!

The 6,200 jobs for "needy" youth breakdown like this: About 4,000 slots, in different federal agencies here, are still available. The definition of "needy" is long and involved. Basically, it means someone from an "educationally or financially deprived background" who needs money to stay in school. All of these jobs are filled through state employment offices.

For details, students should contact the D.C. Department of Labor; Maryland State Employment Service or Virginia. State Employment Commission. They are in the telephone book under D.C. or "state" government. Local schools also have information. Talk to a counselor, principal or, in D.C., at job information centers in the schools.

There are another 2,200 summer jobs for the "needy" that will be made available through the D.C. Board of Education. It has extra funds representing salaries it did not have to pay teachers during the recent strike.

D.C. funds will be used to provide jobs in the federal and District governments, and through private industry. The District will pay the salaries of students selected although the students will work for "host" firms, or federal agencies.

Nationwide, the government provides about 80,000 summer jobs each year. Most of them are for students, and more than half go to needy students.

The "regular" summer jobs - and they are mostly filled - go to students who took competitive tests last fall or winter. Those tests are announced in newspapers (including this space), on government bulletin boards and through school job placement offices. People who took them have about one chance in 4 of landing a job. Those who didn't have zero chance at this late date.

Many of the "needy" jobs are still unfilled. Definitions of "needy" vary, according to family size. For example an "emancipated minor" (the government term for a teenager in school supporting himself or herself, can qualify with an income that does not exceed $4,900 per year. Youngsters in families of 5 can qualify under the needy program if family income does not exceed around $8,000 per year.

If you know someone who may be in the "needy" category, urge them to check with the state employment office in their jurisdiction - immediately. Those 6,200 jobs won't last long.