<?php

echo '<input name="checkbox" value="student" type="checkbox" onclick=change(this, "type"); />';

?>

Uncaught SyntaxError: Unexpected token }

<script>
        function change(cb, year) {
            var value = cb.value;
            var type = cb.checked;
            var yr = year;

            $.ajax( {
                type: 'POST',
                url:"process.php",
                data: { 'data':value, 'type':type, 'yr':yr, },
                success:function(result) {
                    console.log("works" + result);
                }
            });
        }
</script>

echo '<input name="checkbox" value="student" type="checkbox" onclick="change(this, 'type');" />';