<tr>
                    <th>No</th>
                    <th>
                        Nis
                        <a href="index.php?sort=nis&order=asc">&darr;</a>
                        <a href="index.php?sort=nis&order=desc">&uarr;</a>
                    </th>
                    <th>
                        Nama Lengkap
                        <a href="index.php?sort=nama_lengkap&order=asc">&darr;</a>
                        <a href="index.php?sort=nama_lengkap&order=desc">&uarr;</a>
                    </th>
                    <th>
                        Jenis Kelamin
                        <a href="index.php?sort=jenis_kelamin&order=asc">&darr;</a>
                        <a href="index.php?sort=jenis_kelamin&order=desc">&uarr;</a>
                    </th>
                    <th>
                        Kelas
                        <a href="index.php?sort=kelas&order=asc">&darr;</a>
                        <a href="index.php?sort=kelas&order=desc">&uarr;</a>
                    </th>
                    <th>
                        Jurusan
                        <a href="index.php?sort=jurusan&order=asc">&darr;</a>
                        <a href="index.php?sort=jurusan&order=desc">&uarr;</a>
                    </th>
                    <th>
                        Gol Darah
                        <a href="index.php?sort=gol_darah&order=asc">&darr;</a>
                        <a href="index.php?sort=gol_darah&order=desc">&uarr;</a>
                    </th>
                    <th>
                        Alamat
                        <a href="index.php?sort=alamat&order=asc">&darr;</a>
                        <a href="index.php?sort=alamat&order=desc">&uarr;</a>
                    </th>
                    <th>Nama Ibu Kandung</th>
                    <th>Aksi</th>
                </tr>