 Chrissy s continued presence at Grange Hill is causing parents to withdraw their children in protest at her bad example. Natasha gets a lecture from Mr. Robson - she is insulting to Natalie about Matthew. Maria and Fran apologize to Natalie and Nat explains how her twin sister lived with her father after her parents were divorced. Natasha pretends to be Natalie, and winds Matthew up. Mr. Hargreaves acquires a mobile phone and begins to seriously aggravate Mr. Robson by calling while he s away on his course. Jacko s gang go windscreen washing again - but they have competition. Becky and Alice have entered the same business, and are armed with a special solution courtesy of Mr. Hankin. They enter a spirited competition, dirtying the windscreen of a nearby car - unfortunately, it s Mr. Hargreaves s car, who just happens to be ducking down out of sight, to work on his electrics. Alarmed at the sudden activity, he pops his head back up, and the windscreen cleaners run off. Mr. Hargreaves phones Mr. Robson angrily, who can barely stop himself laughing as he ticks off Jacko s lot, Alice and Becky. The first meeting to discuss the school newspaper convenes: Justine is appointed editor. Mr. Hargreaves has an argument with Mr. Robson over the punishment of the windscreen entrepreneurs - he announces that no-one can leave school at lunchtime from now on. Ray overhears, and rushes his scoop to Nick for a special bulletin to be printed. The next morning, Mr. Robson finds that everyone is up in arms about the lunchtime ban - thanks to copies of the bulletin circulating...