şkol

/ʃkol/

Cases

SingularPluralWhen to use it
nominativeşkolthe schoolşkollathe schoolsthe plain dictionary form — the doer of the sentence
genitiveşkolnuthe school'sşkollanıthe schools'the owner — whose it is
accusativeşkolnuthe school (as the object)şkollanıthe schools (as the object)a specific, known object — whom or what
dativeşkolğato the schoolşkollağato the schoolsdirection or recipient — to where, to whom
locativeşkoldaat / in the schoolşkolladaat / in the schoolswhere it is; also having — mende bar, "I have it"
ablativeşkoldanfrom the schoolşkolladanfrom the schoolswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myşkolummy schoolşkollarımmy schools
yourşkolungyour schoolşkollarıngyour schools
his / herşkoluhis / her schoolşkollarıhis / her schools
ourşkolubuzour schoolşkollarıbızour schools
you all'sşkoluğuzyou all's schoolşkollarığızyou all's schools
theirşkollarıtheir schoolşkollarıtheir schools

The overlap in the last rows is real, not a mistake: şkolları can mean "his / her schools", "their school", or "their schools" — context decides.