Yes, it's intended to be a lot more kid-friendly than Dr. Who or, especially, Torchwood. Putting aside the children-friendliness of the show, it's got some good science fiction action and the idea content is higher than television average. With a good price, I'd recommend this to anyone, though some familiarity with the Dr. Who shows might help with context.
The Last Sontaran: This is a direct continuation of the 10th Doctor's episodes Poison Sky & Sontaran Stratagem. It's loaded with science fiction movie references (Star Wars, Predator, etc.) and the 1st episode action is pretty good. There are some logical gaps that grate, but it's pretty well done.
The Day of the Clown: Good creepy show introducing some new characters. The Pied Piper features... Some filler, but mostly good.
Secrets of the Stars: Astrology, possession, Ancient Ones, and a Chosen One. But nowhere near as bad as that makes it sound! Still, my least favorite of the season.
The Mark of the Berserker: Sarah Jane doesn't feature prominently in this episode, rather it's like the Dr. Who & Torchwood episodes that focus instead on others having a singular experience with the unknown and alien. Rather well done tale of an alien pendant and family relationships.
The Temptation of Sarah Jane Smith: Time Travel, the Trickster, and a Trap. A well-worn science fiction cliche of changing the past to horrible effect in the present, but nicely executed. More would be telling too much...
Enemy of the Bane: UNIT, the Brigadier, immortal aliens, Mrs. Wormwood ("Luke, I am your mother."), and the Bane attempt to take over the world again. Might be a bit too much packed in here, but, once again, pretty well done.
This isn't the greatest science fiction television of all times, but it's fun, smart, and very human.