Here are some links to the local school districts:

Charleston County schools (CCSD)

Charleston County

Berkeley County schools

Dorchester County district two

Dorchester County district four

 

Here's a link for Schools and Colleges (The link goes to schools with 15 miles of Charleston.  That search can be changed.)

nces.ed.gov

 

Here are links to Tax calculators (estimates only):

Charleston County

Berkeley County

All South Carolina Counties