"CourseID"=>("ICMB281"=>array("Grade"=>"3.5"),"ICMB221","ICMB371","ICMB431")
Can you see what's wrong with the above line?
If, not, then write it in a format that makes it easier to see the elements:
$Student = array(
"Scott" => array(
"ID" => "4580001",
"Major" => "BBA",
"CourseID" => ( //oh no, where's the array keyword?
"ICMB281" => array(
"Grade" => "3.5"
),
"ICMB221",
"ICMB371",
"ICMB431"
)
//oh no, where's the closing parenthesis?
);