First of all, no, these are not raglan sleeves. It's a yoke top. THIS is what raglan sleeves look like, they kind of angle towards the neck: http://www.ravelry.com/patterns/library/raglan-sleeve-easy-baby-sweater .
Now as for your held sts. At the very end of the project, they are going to be grafted together for your underarm seams. Here's how it works: For the sake of example we'll use the numbers for the smallest size. You start with 64 sts. Knit 19 sts. Then take the last 6 of those sts and put them on a holder-- these will be for your right underarm seam. Now you have 13 sts left on the needle, which is the right front of the sweater. Knit 32 more sts. Then take the last 6 of those and put them on another holder-- these will be for your left underarm seam. Now you have 26 sts left from that section, which is the back of your sweater. Now knit the last 13 sts you have left, and that will be your left front of the sweater.
When you are finished with the sleeves, before you join them to the body, for each sleeve, you also take off 3 sts from each end, which makes 6 sts, and put them on holders. Those 6 sts are for the underarm seams and at the end of the project, you will sew them to each set of the 6 sts you put on holders from the body.
Make sense?. . .