while loop dan gabungkan output di mysql php

$q = mysql_query("
    SELECT
        n.id,
        n.firstname, 
        n.lastname,
        n.email,
        g.gradeone, 
        g.gradetwo, 
        g.gradethree, 
        ((g.gradeone + g.gradetwo + g.gradethree) / 3) AS average
    FROM
        newstudent n JOIN grades g USING (id)
    ORDER BY
        n.id
") or die (mysql_error());

Coba gunakan kueri ini, lalu keluarkan hasilnya dalam satu putaran - hapus

while ($r = mysql_fetch_array($avg))

dengan kawat giginya.

Tinggalkan sesuatu seperti ini:

....
print "<td>$row['gradetwo']</td>";
print "<td>$row['gradethree']</td>";

print "<td>$row['average']</td>";
....