The phrase "split into categories" is correct and can be used in written English.
For example, you might write, "The students were tasked with splitting the list of items into categories."
I have a conveyor belt, and all my possessions are on it, split into categories, like C for clothing, K for kitchen, A for artworks, etc.
The books are split into categories including best mischief and mayhem, weird and wonderful, sugar and spice, best swashbucklers and derring-do, as well as books to cuddle up with.
For those unfamiliar with the format, this is the section of the programme where the hopefuls are split into categories and each group is flown to one of the judges "homes".
It's a slightly complicated prize that starts with a longlist split into categories, and ends with five books from different genres fighting it out for the glory (and increased sales) of being named book of the year.
iPhone / iPad by Lucas Zanotto Great British Chefs Kids (Free) This free app wants to get children cooking, with 105 recipes from 21 British chefs, split into categories like snacks, mains, cakes and biscuits, pastry, chocolate and "vegetables & salad" (good luck with that one, most parents!).
Even if you have a so-called bucket plan that's meant to simplify things — 450 minutes for $40, say — the bill is probably split into categories of minutes (in plan, out of plan, promotional, roaming), data charges, taxes, E911 fees and other cryptic line items.
In 1991, the category was split into the categories Best Rap Solo Performance and Best Rap Performance by a Duo or Group.
I have tried to split them into categories that students and teachers would find useful.
"They will split them into categories - Americans will probably be the most valuable, British next and then any white European will have a value.
The category name remained unchanged until 2004 when it was split into separate categories for Female and Male Rap Solo Performances.
There is a vast array of weapons split into three categories – primary, special and heavy.
