| Name | Grades | City | Phone number | |
|---|---|---|---|---|
| Ashton Elementary School | Elementary | Ashton | (208) 652-7601 | |
| Athol Elementary School | Elementary | Athol | (208) 683-2231 | |
| Atlas Elementary School | Elementary | Hayden | (208) 762-0626 | |
| Avery Community Library | Avery | (208) 245-3557 | ||
| Avery Elementary - Jr. High School | Middle/Junior high | Avery | (208) 245-2479 | |
| Barbara R. Morgan Elementary School | Elementary | McCall | (208) 634-2219 | |
| Basin Elementary School | Elementary | Idaho City | (208) 392-6631 | |
| Bear Lake Co. Dist. Library - Paris Branch | Paris | (208) 945-2253 | ||
| Bear Lake County District Library - Whitman-Thiel Branch | Montpelier | (208) 847-1664 | ||
| Bear Lake High School | Senior high | Montpelier | (208) 847-0294 | |
| Bear Lake Middle School | Middle/Junior high | Montpelier | (208) 847-2255 | |
| Bellevue Elementary School | Elementary | Bellevue | (208) 578-5080 | |
| Bellevue Public Library | Bellevue | (208) 788-2128 | ||
| Benewah County District Library - Tensed Branch | Tensed | (208)274-2922 | ||
| Benewah County District Library - Tri - Community | Fernwood | (208) 245-4883 | ||
| Betty Kiefer Elementary School | Elementary | Rathdrum | (208) 687-5206 | |
| Biblical Studies Center Library | Boise | (208) 342-2182 | ||
| Bickel Elementary School | Elementary | Twin Falls | (208) 733-4116 | |
| Bingham Memorial Hospital Medical Library | Blackfoot | (208)785-3896 | ||
| Birch Elementary School | Elementary | Caldwell | (208) 461-5960 | |
| Bishop Kelly High School | Senior high | Boise | (208) 375-6010 | |
| Black Canyon School (Alt.) | Senior high | Emmett | (208) 365-5552 | |
| Blackfoot Charter Community Learning Center | Elementary | Blackfoot | (208) 782-0744 | |
| Blackfoot High School | Senior high | Blackfoot | (208) 785-8810 | |
| Blackfoot Public Library | Blackfoot | (208) 785-8628 | ||
| Blackfoot Rural Library District | Blackfoot | (208) 785-8628 | ||
| Blackfoot Sixth Grade School | Elementary | Blackfoot | (208) 785-8838 | |
| Bliss School |
Elementary Middle/Junior high Senior high |
Bliss | (208) 352-4445 | |
| Blue Hills Christian School |
Elementary Middle/Junior high Senior high |
Moscow | (208) 882-0350 | |
| Boise Basin Library District | Idaho City | (208) 392-4558 |