Go to Amazon's website and click the following: Office & School Supplies; Presentation Supplies; and Presentation & Display Boards. Review the chalkboard selection that comes up, then select the board that fits your needs. Look at the detailed information that comes with each board, then make sure that it's in stock. Click the "Buy Online Now" link to make your purchase.
US Markerboard also sells student chalkboards. Go to their "Blackboards & Chalkboards" section for a list of chalkboards. Click on a picture of a blackboard to review its description and features. Scroll down to review different chalkboard sizes, trims, and price information. Click on your choice, select color and quantity, then add the item to your cart.
Pull up the website for Whiteboards ETC, then click "Chalkboards." Review the information on the page that comes up, then scroll down to the selections. Its student chalkboards come in 4 different types: magnetic, nonmagnetic, composition and freestanding. Click on the one you want to buy, then click on your choice of frames. Review the details for your choice before purchasing.
Proceed to the Office Depot website and select "Chalkboards." You can also use the "search" function on that website to its chalkboard pages. Select "Chalk Boards" from "category," then review the options that come up. Type in the number of chalkboards you want and then click "add to cart."
Check Office Depot or Office Max stores to see student chalkboards. Many teacher and school supply stores also sell blackboards.