(1) To aid the court in its decision on disposition, a social study shall be made by the person or agency filing the petition. A parent may submit a counselor's or health care provider's evaluation of the parent, which shall either be included in the social study or considered in conjunction with the social study. The study shall include all social files and may also include facts relating to the child's cultural heritage, and shall be made available to the court. The court shall consider the social file, social study, guardian ad litem report, the court-appointed special advocate's report, if any, and any reports filed by a party at the disposition hearing in addition to evidence produced at the fact-finding hearing. At least ten working days before the disposition hearing, the department shall mail to the parent and his or her attorney a copy of the agency's social study and proposed service plan, which shall be in writing or in a form understandable to the parents or custodians. In addition, the department shall provide an opportunity for parents to review and comment on the plan at the local office closest to the parents' residence. If the parents disagree with the agency's plan or any part thereof, the parents shall submit to the court at least twenty-four hours before the hearing, in writing, or signed oral statement, an alternative plan to correct the problems which led to the finding of dependency. This section shall not interfere with the right of the parents or custodians to submit oral arguments regarding the disposition plan at the hearing.
(2)(a) The guardian ad litem or court-appointed special advocate shall file his or her report with the court and with the parties pursuant to court rule prior to a hearing for which a report is required. The report shall include a written list of persons interviewed and reports or documentation considered. If the report makes particular recommendations, the report shall include specific information on which the guardian ad litem or court-appointed special advocate relied in making each particular recommendation.
(b) The parties to the proceeding may file written responses to the guardian ad litem's or court-appointed special advocate's report with the court and deliver such responses to the other parties at a reasonable time or pursuant to court rule before the hearing. The court shall consider any written responses to the guardian ad litem's or court-appointed special advocate's report, including any factual information or recommendations provided in the report.