What happens to defeated senatorial candidates and ex-CIA heads these days?

In the case of two familiar Washington figures, you will find them taking the bar review course at Georgetown University law school to make themselves employable again.

The paunchy, curly-haired professor stands in front of Georgetown's mock courtroom with his audience of 200, joking, lecturing and talking about everything from larceny to arson.

Listening carefully are the young men and women fresh out of law school, a housewife who hasn't practiced in years, an IRS clerk, a CPA from New York, the former congressman and the ex-CIA director. They paid $300 for the six-week cram course.

The majority of the class is under 30 and will be taking the D. C. bar in March. But others just need a little refresher.

"Thank God I'm not taking the exam," said a relieved William Colby, former CIA head. "So much has changed since I practiced in New York 25 years ago. I'm just in this for a review."

But former Rep. Bill Greene (D-PA.), who lost a Senate race to H. John Heinz III of the Heinz fortune, isn't so lucky.

"I quit law school (Villanova) in 1964 to run for Congress," said Greene, who at 24 was one of the youngest people to ever enter the House of Representatives. I finished up my course work down here nights in '74 but I never took the bar so I have a lot of catching up to do."

Colby, the only one in the class wearing a tie (black with orange tigers from his alma mater, Princeton), and Greene, dressed in blue jeans, hardly go unnoticed. Students look, point and whisper, but no one bothers them.

They take notes diligently along with everyone else. And like their classmates, they both admit their futures are uncertain.

"I'll probably join a law firm here in town," says Colby. "I've talked to a number of people and there are various options open to me.

"I've also considered starting my own firm this summer with a few others I know who are interested. The advantage to that is I'm free to do what I want."

Colby graduated from Columbia law school in 1947 and practiced for a Wall Street firm before coming to Washington. He says he spends most of his time studying, working on his book and "keeping up with what's going on in the world."

As for Greene, he's less inclined to talk about his future.

"I'm definitely going to take the Pennsylvania bar in March, but I don't know what I'll be doing," he says.

"Joining a firm is definitely one of my options, but it's not really fair to announce what I'm going to do before I tell them."

Greene, who comes from a long line of Pennsylvania politicians, says he plans to keep his residence in Philadelphia and may return there.