private static function get_post_type_caps( $role ) {

		$caps = array();

		// Students get nothing.
		if ( 'student' !== $role ) {

			$post_types = array(
				'course'          => 'course',
				'lesson'          => 'lesson',
				'llms_quiz'       => array( 'quiz', 'quizzes' ),
				'llms_question'   => 'question',
				'llms_membership' => 'membership',
			);
			foreach ( $post_types as $post_type => $names ) {

				$post_caps = LLMS_Post_Types::get_post_type_caps( $names );

				// Filter the caps down for these roles.
				if ( in_array( $role, array( 'instructor', 'instructors_assistant' ), true ) ) {

					$allowed = array(
						'instructor'            => array(
							'delete_posts',
							'delete_published_posts',
							'edit_post',
							'edit_posts',
							'edit_published_posts',
							'publish_posts',
							'create_posts',
						),
						'instructors_assistant' => array(
							'edit_post',
							'edit_posts',
							'edit_published_posts',
						),
					);

					foreach ( $post_caps as $post_cap => $cpt_cap ) {

						if ( ! in_array( $post_cap, $allowed[ $role ], true ) ) {
							unset( $post_caps[ $post_cap ] );
						}
					}
				}

				$caps[ $post_type ] = array_fill_keys( array_values( $post_caps ), true );

			}

			$taxes = array(
				'course_cat'        => 'course_cat',
				'course_difficulty' => array( 'course_difficulty', 'course_difficulties' ),
				'course_tag'        => 'course_tag',
				'course_track'      => 'course_track',
				'membership_cat'    => 'membership_cat',
				'membership_tag'    => 'membership_tag',
			);
			foreach ( $taxes as $tax => $names ) {

				$tax_caps = LLMS_Post_Types::get_tax_caps( $names );

				// Filter the caps down for these roles.
				if ( in_array( $role, array( 'instructor', 'instructors_assistant' ), true ) ) {

					$allowed = array(
						'assign_terms',
					);

					foreach ( $tax_caps as $tax_cap => $ct_cap ) {

						if ( ! in_array( $tax_cap, $allowed, true ) ) {
							unset( $tax_caps[ $tax_cap ] );
						}
					}
				}

				$caps[ $tax ] = array_fill_keys( array_values( $tax_caps ), true );

			}
		}

		return apply_filters( 'llms_get_' . $role . '_post_type_caps', $caps );

	}