CBS has announced it is bringing in three new series the last week of this month and switching time slots for four others... while putting "Flatbush" on the shelf as of tonight and divorcing "Married, the First Year" after its March 21 telecast...

The network says "The Bad News Bears"... starring Jack Warden as the reluctant coach of a team of young troublemakers... debuts Saturday, March 24 at 8 p.m....

"Miss Winslow & Son"... a sitcom starring Darleen Carr as an unmarried mother trying to carve out a life of her own.. arrives Wednesday, March 28 at 8:30....

"Dear Detective"... a one-hour melodrama starring Benda Vaccaro as a police sergeant with a daughter and a boyfriend who's a professor Greek literature... debuts with a two-hour special March 28 and goes into the 9 p.m. time slot on Wednesday, April 4...

"One Day at a Time" meanwhile, moves to Sunday at 8:30 on March 18; "Billy" goes to Saturday at 8:30 on March 24; "The Jeffersons" moves to Wednesday at 8 on March 28; and "The White Shadow" takes over the Monday 8 p.m. slot on March 19...

These latest moves -- if indeed "Flatbush" does not return -- brings to 10 the number of shows jettisoned by all three networks within the last week... with CBS dumping three... ABC two... and last-place NBC five...

Moving Right Along

CBS has decided not to participate in a controversial project funded by HEW and developed by PBS... which is to provide closed-captioning for the hearing-impaired on a limited number of network prime-time programs when the system is launched early next year...

ABC and a reluctant NBC already have agreed to join the $4 million experiment... which HEW Secretary Joe Califano is now expected to announce later this month... after several delays...

While pointing out that "CBS shares the concern about captioning TV programs for the hearing-impaired community, (it) wants to be sure that the solution to serving this audience is the right one....

"We are troubled," a CBS statement continues, "by the HEW/PBS proposal which involves an investment by the hearing-impaired to purchase home decoding equipment and the investment of large sums of federal and private funds in a system which some experts feel is already technically outdated due to its extremely low data rate, which limits its information capacity"...

One problem bothering CBS is the proposed decoder, which could cost the hearing-impaired from $100 to as much as $500....

The decoder, attached to a TV set, would translate captions inserted at a special coding center to be established by PBS... by the "vertical blanking" of a particular line of the TV picture which only those with a decoder would see....

Under the HEW/PBS plan... each commercial network would provide about five hours a week of prime-time shows (PBS would provide 10 hours)... at a cost for preparation of the captions of $500,000 a year for each network....

CBS has already applied to the FCC to conduct on-air tests of what it believes are two superior systems (called teletext) at KMOX-TV, its owned-station in St. Louis... at a cost of $500,000, according to the network....

CBS prefers the teletext system, already in wide use in Europe, because it can provide many other informational services....

Another problem, in CBS's view, is that the exact number of "hard-core" hearing-impaired who require the decoder is not known... with estimates ranging from 200,000 to as many as 13 million...

ABC has been enthusiastic about the HEW/PBS project since it was conceived about five years ago... but only within the last few weeks... after a change of top management at NBC... has the latter network... which shares some of CBS's doubts about the proposed system... agreed to participate...

The FCC, by the way, has scheduled a one-day "hearing" on closed-captioning the first week of April... and one CBS executive told us Friday... "We know we'll catch flack for this decision at that hearing, but we think we're doing the right thing... we're in one of those 'can't-win' situations, that's all"...

School Program

WTTG vice president and general manager William Carpenter said he is using teachers supplied through the office of D.C. School Superintendent Vincent E. Reed.... as Channel 5 this morning launches an unsponsored, one-hour "Classroom on the Air"... intended to help students during the current strike of D.C. teachers...

Carpenter stressed that "In no way is the station taking sides in the strike," but "we feel we have a responsibility to serve the community under the circumstances...."

The taped program, to air from 9 to 10 a.m. daily for an unspecified length of time, will offer instruction for the various grades affected by the strike... but Carpenter emphasized that "all details are being handled by Superintendent Reed's office..."

Carpenter said he wouldn't be surprised if there is a reaction to the program froms some of the striking teachers...

Prison Program

Channel 5's presentation of "Scared Straight!" Thursday night captured the market's largest audience between 10 and 11 p.m., according to an Arbitron "coincidental" telephone poll conducted during the program...

The unusual program showed tough convicts at Rahway (N.J.) state prison trying to intimidate juvenile offenders out of a life of crime with harsh language and threats... captured 31 percent of the audience here in that time period... ahead of "People's Choice Awards" on Channel 9... "Mrs. Columbo" on Channel 4 and "Family" on Channel 7 in that order.

According to the station, some 2,500 calls also were registered by the phone company 18 hours after the airing.. and of the calls monitored "90 percent were favorable"... with most of the remaining 10 percent objecting to the language....

The program drew a remarkable 40 percent of the New York audience that same night when shown over WNEW there... and 39 percent in Los Angeles... when seen on independent KTLA...

Because of the public response here, the program will be repeated on WTTG next Sunday night at 10...

Do You Know Me?

Jim Martz... who's been director of TV sales at Channel 4... goes to Chicago as director of NBC spot sales... replacing Don Douglas (ex-WTOP) who is leaving the company...

Ned Paddock, who's been sales manager at WRC, will replace Martz...

Carol Randolph has been named executive producer of Channel 9's "Harambee"...

Edward L. Hickson, a computer operator at Channel 26, has been named one of two 1979 PBS/Ford Foundation scholars...

CBS has bought 24 one-hour episodes of "The Return of the Saint"... a new series with Ian Ogilvy in the title role... which will be seen in a late-night time slot next fall (probably replacing "The New Avengers" on Friday night)... it's produced by ITC Entertainment in Great Britain....

No sooner had we recovered from the news that Channel 7 is changing the names of its two late-night weekend movies to just "The Late Great Movie"... Channel 9 up and announces it's changing the titles of its weekend movies from "Movie House" and "The Early Show" to simply... "The Moview"...

And Finally

On what must have been a very slow day in Dallas recently, Mulberry Square Productions announced that "Benjie has placed his paw print on an agreement to do his third and fourth TV specials for ABC over the next two years"...